APA

Lewis C. [., . (1960). Mere christianity. New York: Macmillan Publishing Company.

Chicago

Lewis C.S [F], . 1960. Mere christianity. New York: Macmillan Publishing Company.

Harvard

Lewis C. [., . (1960). Mere christianity. New York: Macmillan Publishing Company.

MLA

Lewis C.S [F], . Mere christianity. New York: Macmillan Publishing Company. 1960.